Alright, let's work through 78845152 times 98497020 step by step
78845152 × 98497020 = 98497020 × (78845152)
+ 98497020 × 2 resulting in 196994040
+ 98497020 × 50 that results in 4924851000
+ 98497020 × 100 that results in 9849702000
+ 98497020 × 5000 which equals 492485100000
+ 98497020 × 40000 that equals 3939880800000
+ 98497020 × 800000 resulting in 78797616000000
+ 98497020 × 8000000 that equals 787976160000000
+ 98497020 × 70000000 what gives us 6894791400000000

= 7766012513447040
